“They saw their injured country's woe;
The flaming town, the wasted field;
Then rushed to meet the insulting foe;
They took the spear, - but left the shield.”
―Philip Freneau
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And by a prudent flight and cunning save A life which valour could not, from the grave. A better buckler I can soon regain, But who can get another life again?
Archilochus
Google AI: In physics, time is generally considered a scalar quantity, not a vector, because it is fully described by a magnitude (duration) and lacks direction in three-dimensional space. While time moves in one direction (forward), it is not a vector quantity in the traditional sense, but it functions as a coordinate label in relativistic spacetime.
Key details regarding this classification:
Scalar Nature: In Classical Mechanics, time is a fundamental scalar quantity (magnitude only).
Relativity (4-Vector): In Einstein's theory of Relativity, time is combined with space to form a 4-dimensional spacetime manifold (a 4-vector), where it acts as a coordinate component (\(t\)), but not a 3D vector.
Time Interval vs. Time: While a specific instant in time is a coordinate, a time interval (\(\Delta t\)) acts as a scalar.
Directionality: Time does not have a spatial direction (like North or East), which is required to be a vector.
Therefore, in everyday physics and classical mechanics, time is a scalar, but in relativistic physics, it is a component of a space-time 4-vector.
6 comments:
Meh.
There's no paradox. Just wrong POV.
Yawn.
Forwards, not backwards?
Which way does your Consciousness run?
//Forwards, not backwards?
Only two choices?
In Spacetime? Or Absolute Dimensions (4 x 4 matrix) for each (t,x,y,z)
The t's are (+ or -)?
Google AI:
In physics, time is generally considered a scalar quantity, not a vector, because it is fully described by a magnitude (duration) and lacks direction in three-dimensional space. While time moves in one direction (forward), it is not a vector quantity in the traditional sense, but it functions as a coordinate label in relativistic spacetime.
Key details regarding this classification:
Scalar Nature: In Classical Mechanics, time is a fundamental scalar quantity (magnitude only).
Relativity (4-Vector): In Einstein's theory of Relativity, time is combined with space to form a 4-dimensional spacetime manifold (a 4-vector), where it acts as a coordinate component (\(t\)), but not a 3D vector.
Time Interval vs. Time: While a specific instant in time is a coordinate, a time interval (\(\Delta t\)) acts as a scalar.
Directionality: Time does not have a spatial direction (like North or East), which is required to be a vector.
Therefore, in everyday physics and classical mechanics, time is a scalar, but in relativistic physics, it is a component of a space-time 4-vector.
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